Hulsea nana |
Hulsea brevifolia |
|
---|---|---|
dwarf alpinegold, dwarf hulsea, little hulsea |
short leaf hulsea, shortleaf alpinegold |
|
Habit | Perennials, 5–15(–20) cm. | Perennials, 30–60 cm. |
Stems | 1–7, glandular-puberulent and sparsely lanate. |
1–7, sparsely lanate. |
Leaves | mostly basal; blades narrowly spatulate, 2–6 cm, margins lobed or toothed (lobes or teeth mostly oblong), faces sparsely lanate to woolly; distal cauline leaves narrowly lanceolate, much reduced. |
mostly cauline; blades green, lanceolate to narrowly oblanceolate, 5–11 cm, margins sinuate to toothed (teeth triangular, obtuse), faces sparsely to moderately glandular-villous; distal cauline leaves ± oblanceolate, gradually reduced. |
Involucres | obconic, 8–12 mm diam. |
obconic to hemispheric, 10–16 mm diam. |
Ray florets | 12–30; corolla tubes glabrous, laminae yellow, 6–10 mm. |
10–23; corolla tubes hairy, laminae yellow, 10–14 mm. |
Disc corollas | yellow. |
yellow. |
Phyllaries | 8–12 mm, outer narrowly obovate to oblong-lanceolate, apices acuminate to acute. |
8–10 mm, outer lanceolate, apices acuminate. |
Heads | 1. |
3–4. |
Cypselae | 6–8 mm; pappus scales subequal, 1–2 mm. |
6–8 mm; pappus scales unequal, shorter 1–2 mm, longer 2–3 mm. |
2n | = 38. |
= 38. |
Hulsea nana |
Hulsea brevifolia |
|
Phenology | Flowering summer. | Flowering late spring–summer. |
Habitat | Subalpine to alpine rocky slopes, taluses, mostly volcanic substrates | Common after fires, open sites in coniferous forests, mostly coarse-grained volcanic or granitic soils |
Elevation | 2400–3000 m (7900–9800 ft) | 1500–2700 m (4900–8900 ft) |
Distribution |
CA; OR; WA
|
CA
|
Discussion | Densely lanate or woolly plants of Hulsea nana are referable to var. larsenii. Such plants may occur in distinct populations but can be found together with sparsely lanate and strictly glandular plants. The distribution of lanate to woolly plants appears associated with higher levels of insolation. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Hulsea brevifolia grows in the Sierra Nevada. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 21, p. 398. | FNA vol. 21, p. 397. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Hulsea | Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Hulsea |
Sibling taxa | ||
Synonyms | H. nana var. larsenii, H. vulcanica | |
Name authority | A. Gray: in War Department [U.S.], Pacif. Railr. Rep. 6(3): 76, plate 13. (1858) | A. Gray: Proc. Amer. Acad. Arts 7: 359. (1867) |
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